1.3k citations · 9.1k across the 209 of their papers we have counts for
9 papers · 1 filter
Logarithmic Operators and Hidden Continuous Symmetry in Critical Disordered Models
J. -S. Caux, Ian I. Kogan, A. M. Tsvelik
We study the model of (2 + 1)-dimensional relativistic fermions in a random non-Abelian gauge potential at criticality. The exact solution shows that the operator expansion contain…
Skyrmion Liquid in SU(2)-invariant Quantum Hall Systems
A. G. Green, I. I. Kogan, A. M. Tsvelik
We report on a theory of the Skyrmion states which occur in quantum Hall regime near certain filling factors. It is shown that in the limit of zero Zeeman splitting in a realistic…
Superconductivity in a spin liquid - a one dimensional example
D. G. Shelton, A. M. Tsvelik
We study a one-dimensional model of interacting conduction electrons with a two-fold degenerate band away from half filling. The interaction includes an on-site Coulomb repulsion a…
Antiferromagnetic spin ladders: crossover between spin S = 1/2 and S = 1 chains
D. G. Shelton, A. A. Nersesyan, A. M. Tsvelik
We study a model of two weakly coupled isotropic spin-1/2 Heisenberg chains with an antiferromagnetic coupling along the chains. It is shown that the system always has a spectral g…
Pedestrian Approach to the Two-Channel Kondo Model
P. Coleman, L. Ioffe, A. M. Tsvelik
We reformulate the two-channel Kondo model to explicitly remove the unscattered charge degrees of freedom. This procedure permits us to move the non-Fermi liquid fixed point to inf…
Anisotropic Spin-1/2 Heisenberg Chain with Open Boundary Conditions
P. de Sa, A. M. Tsvelik
We study the exact solution of the XXZ spin-1/2 Heisenberg chain with a boundary magnetic field in the region where the bulk excitations are gapless. It is shown that a bound state…